//
//  UIDeviceExt.m
//  mobion Music
//
//  Created by Vu Manh Hung on 12/3/10.
//  Copyright 2010 GNT. All rights reserved.
//

#import "UIDeviceExt.h"

#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_dl.h>
#import <CoreTelephony/CTTelephonyNetworkInfo.h>
#import <CoreTelephony/CTCarrier.h>

@implementation UIDevice (mobion)

- (NSString *)type
{
    size_t size;
    
    // Set 'oldp' parameter to NULL to get the size of the data
    // returned so we can allocate appropriate amount of space
    sysctlbyname("hw.machine", NULL, &size, NULL, 0); 
    
    // Allocate the space to store name
    char *name = malloc(size);
    
    // Get the platform name
    sysctlbyname("hw.machine", name, &size, NULL, 0);
    
    // Place name into a string
    NSString *deviceType = [NSString stringWithCString:name encoding: NSASCIIStringEncoding];
    
    // Done with this
    free(name);
    
    return deviceType;
}


- (BOOL)isIPod {
    NSString *m = [self model];
    return ([m rangeOfString:@"iPod"].length > 0);
}


- (BOOL)isIPad {
    SEL sel = @selector(userInterfaceIdiom);
    if ([self respondsToSelector:sel]) {
        return (self.userInterfaceIdiom == UIUserInterfaceIdiomPad);
    }
    return FALSE;
}


- (NSString *)cpuFrequency {
    size_t length;
    int mib[6];    
    int result;
    
    mib[0] = CTL_HW;
    mib[1] = HW_CPU_FREQ;
    length = sizeof(result);
    if (sysctl(mib, 2, &result, &length, NULL, 0) < 0) {
        DLog(@"Error getting cpu frequency");
    }
    return [NSString stringWithFormat:@"%d hz", result];
}

+ (NSString *)getMacAddress
{
    int                 mgmtInfoBase[6];
    char                *msgBuffer = NULL;
    size_t              length;
    unsigned char       macAddress[6];
    struct if_msghdr    *interfaceMsgStruct;
    struct sockaddr_dl  *socketStruct;
    NSString            *errorFlag = NULL;
    
    // Setup the management Information Base (mib)
    mgmtInfoBase[0] = CTL_NET;        // Request network subsystem
    mgmtInfoBase[1] = AF_ROUTE;       // Routing table info
    mgmtInfoBase[2] = 0;              
    mgmtInfoBase[3] = AF_LINK;        // Request link layer information
    mgmtInfoBase[4] = NET_RT_IFLIST;  // Request all configured interfaces
    
    // With all configured interfaces requested, get handle index
    if ((mgmtInfoBase[5] = if_nametoindex("en0")) == 0) 
        errorFlag = @"if_nametoindex failure";
    else
    {
        // Get the size of the data available (store in len)
        if (sysctl(mgmtInfoBase, 6, NULL, &length, NULL, 0) < 0) 
            errorFlag = @"sysctl mgmtInfoBase failure";
        else
        {
            // Alloc memory based on above call
            if ((msgBuffer = malloc(length)) == NULL)
                errorFlag = @"buffer allocation failure";
            else
            {
                // Get system information, store in buffer
                if (sysctl(mgmtInfoBase, 6, msgBuffer, &length, NULL, 0) < 0)
                    errorFlag = @"sysctl msgBuffer failure";
            }
        }
    }
    
    // Befor going any further...
    if (errorFlag != NULL)
    {
        NSLog(@"Error: %@", errorFlag);
        return errorFlag;
    }
    
    // Map msgbuffer to interface message structure
    interfaceMsgStruct = (struct if_msghdr *) msgBuffer;
    
    // Map to link-level socket structure
    socketStruct = (struct sockaddr_dl *) (interfaceMsgStruct + 1);
    
    // Copy link layer address data in socket structure to an array
    memcpy(&macAddress, socketStruct->sdl_data + socketStruct->sdl_nlen, 6);
    
    // Read from char array into a string object, into traditional Mac address format
    NSString *macAddressString = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X", 
                                  macAddress[0], macAddress[1], macAddress[2], 
                                  macAddress[3], macAddress[4], macAddress[5]];
//    NSLog(@"Mac Address: %@", macAddressString);
    
    // Release the buffer memory
    free(msgBuffer);
    
    return macAddressString;
}

+(NSString*) getCarrierName
{
    CTTelephonyNetworkInfo *netinfo = [[CTTelephonyNetworkInfo alloc] init];
    CTCarrier *carrier = [netinfo subscriberCellularProvider];
    DLog(@"Carrier Name: %@", [carrier carrierName]);
    [netinfo release];
    return [carrier carrierName];
}

@end